Question

What is meant by summer solstice? when do we have summer solstice in the Northern hemisphere?

Answer 1

The Summer and Winter Solstices. You know them as the first days of winter and summer The day that the Earth's North Pole is tilted closest to the sun is called the summer solstice. This is the longest day (most daylight hours) of the year for people living in the northern hemisphere.

Answer 2

The summer solstice is the day when the sun is inclined with the northern hemisphere of the Earth and the Sun reaches its highest point in the sky. It is the longest day of the year for people living in the northern hemisphere and is also regarded as the first day of summer.
Summer Solstice in the Northern Hemisphere takes place on the 21st of June.